FKIE_CVE-2019-14855
Vulnerability from fkie_nvd - Published: 2020-03-20 16:15 - Updated: 2026-06-17 02:19
Severity
Summary
A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnupg | gnupg | * | |
| fedoraproject | fedora | 30 | |
| fedoraproject | fedora | 31 | |
| canonical | ubuntu_linux | 18.04 |
{
"affected": [
{
"affectedData": [
{
"product": "gnupg2",
"vendor": "Red Hat",
"versions": [
{
"status": "affected",
"version": "2.2.18"
}
]
}
],
"source": "secalert@redhat.com"
}
],
"configurations": [
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"versionEndExcluding": "2.2.18",
"vulnerable": true
}
],
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"operator": "OR"
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18."
},
{
"lang": "es",
"value": "Se detect\u00f3 un fallo en la manera en que podr\u00edan ser falsificadas las firmas de certificados usando colisiones encontradas en el algoritmo SHA-1. Un atacante podr\u00eda usar esta debilidad para crear firmas de certificados falsificadas. Este problema afecta a GnuPG versiones anteriores a 2.2.18."
}
],
"id": "CVE-2019-14855",
"lastModified": "2026-06-17T02:19:10.563",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
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"cvssMetricV30": [
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"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N",
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},
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"impactScore": 3.6,
"source": "secalert@redhat.com",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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},
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"impactScore": 3.6,
"source": "nvd@nist.gov",
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}
]
},
"published": "2020-03-20T16:15:14.680",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Issue Tracking",
"Third Party Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855"
},
{
"source": "secalert@redhat.com",
"tags": [
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],
"url": "https://dev.gnupg.org/T4755"
},
{
"source": "secalert@redhat.com",
"tags": [
"Mailing List",
"Release Notes",
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],
"url": "https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html"
},
{
"source": "secalert@redhat.com",
"tags": [
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"url": "https://rwc.iacr.org/2020/slides/Leurent.pdf"
},
{
"source": "secalert@redhat.com",
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],
"url": "https://usn.ubuntu.com/4516-1/"
},
{
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"tags": [
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],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855"
},
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"tags": [
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"tags": [
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"url": "https://usn.ubuntu.com/4516-1/"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-326"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-326"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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